Setting tool

Abstract

A setting tool for anchoring a spreading anchor having an anchor rod (1) and an expansion sleeve (4), the setting tool including a sleeve-shaped body (8) having an axial blind bore (11) opening at an end surface (13) and a lead-in surface (10) for receiving axial impacts, and provided at a rear end of the sleeve-shaped body (8) remote from the end surface (13) at which the blind bore (11) opens, and a marking element (17) arranged in a bottom (15) of the axial blind bore (11) of the sleeve-shaped body (8) for forming a permanent mark in a rear end surface (3) of the anchor rod (1) at the end of a setting process.

What is claimed is: 
     
       1. A setting tool for anchoring a spreading anchor having an anchor rod (1) and an expansion sleeve (4), comprising a sleeve-shaped body (8) having an end surface (13), an axial blind bore (11) opening at the end surface (13), and a lead-in surface (10) provided at a rear end of the sleeve-shaped body (8) remote from the end surface (13) at which the blind bore (11) opens, for receiving axial impacts; and a marking element (17) arranged in a bottom (15) of the axial blind bore (11) of the sleeve-shaped body (8) for forming a permanent mark in a rear end surface (3) of the anchor rod (1) at an end of a setting process, wherein a claw-shaped driver (14) is provided on the end surface (13) of the sleeve-shaped body, the claw-shaped driver (14) projecting from the end surface (13) in an axial direction, and wherein a shank (9) for connecting the setting tool to a hand-held drill is provided at the rear end of the sleeve-shaped body (8), the lead-in surface (10) being formed on a free end of the shank (9).   
     
     
       2. A setting tool according to claim 1, wherein the ratio of the distance (x), by which the projection (17) extends beyond the bottom (15) of the blind bore (11) of the sleeve-shaped body (8), to the diameter (d) of the blind bore (11), is in a range from 0.3 to 1.2. 
     
     
       3. A setting tool according to claim 1, wherein the projection (17) is formed as a stepped member and has, along a length thereof, at least two sections (18, 20) having different diameters (v, r), and wherein a smaller diameter front section (18) extends toward a free end of the projection (17). 
     
     
       4. A setting tool according to claim 3, wherein a ratio of a diameter (v) of the smaller diameter front section (18) to a diameter (r) of a rear section (20) remote from the bottom (15) of the blind bore (11) amounts to from about 0.2 to about 0.7. 
     
     
       5. A setting tool according to claim 4, wherein the ratio of the diameter (v) of the front section (18) to the diameter (r) of the rear section (20) is in range from 0.3 to 0.6. 
     
     
       6. A setting tool according to claim 4, wherein the front section (18) has, at its front end, a spike-shaped section (19) having a length (s) a ratio of which to a total length (l) of the front section (18) amounts to from about 0.2 to about 0.7. 
     
     
       7. A setting tool according to claim 6, wherein the ratio of the length (s) of the spike-shaped section (19) to the total length (l) of the front section (18) is in a range from 0.3 to 0.6. 
     
     
       8. A setting tool according to claim 3, wherein a ratio of a diameter (r) of the rear section (20) of the projection (17) to the diameter (d) of the blind bore (11) amounts to from about 0.1 to about 0.5. 
     
     
       9. A setting tool according to claim 8, wherein a ratio of a ratio of a diameter (r) of the rear section (20) to the diameter (d) of the blind bore (11) is in a range from 0.2 to 0.4. 
     
     
       10. A setting tool according to claim 3, wherein the projection (17) has a transition region (21) between the front section (18) and the rear section (20) provided with embossing means. 
     
     
       11. A setting tool according to claim 10, wherein the embossing means is formed as one of spike-shaped extension and an annular cutter. 
     
     
       12. A setting tool according to claim 1, wherein the marking element (17) is formed as a pin-shaped hard metal insert arranged in a hole (16) provided in the bottom (15) of the blind bore (11).